[Luamod] Add CalcSpellEffectValue_formula to luamods (#2721)

* [Luamod] Add CalcSpellEffectValue_formula to luamods with example code in utils/mods/spell_formula.lua * Fix typo * Change formula down to uint32, fix format issues and remove debug on lua file
2026-05-17 03:08:26 +00:00 · 2023-01-11 17:49:35 -06:00
parent 2587a7fed5
commit 3341c0b7ab
9 changed files with 179 additions and 3 deletions
@@ -0,0 +1,92 @@
+function CalcSpellEffectValue_formula(e)
+	--THE FUNCTIONALITY OF THIS IS FOR ADDING CUSTOM SPELL FORMULAS WITHOUT INTERFERING WITH EXISTING FORMULAS
+	if (e.formula >= 100000) then
+		e.IgnoreDefault = true;
+	else 
+		e.IgnoreDefault = false;
+		return e;
+	end
+
+	local result = 0
+	local updownsign = 1
+	local ubase = e.base_value
+	local formula = e.formula
+	local base_value = e.base_value
+	local max_value = e.max_value
+	local caster_level = e.caster_level
+	local spell_id = e.spell_id
+	local ticsremaining = e.ticsremaining
+	
+	if (ubase < 0) then
+		ubase = 0 - ubase;
+	end
+	
+	if (max_value < base_value and max_value ~= 0) then
+		--values are calculated down
+		updownsign = -1;
+	else
+		--values are calculated up
+		updownsign = 1;
+	end
+	
+	--ADD FORMULAS HERE NO NEED TO TOUCH OTHER CODE UNLESS YOU KNOW WHAT YOU ARE DOING!!!
+	--FORMULA NUMBERS 100,000+++ are considered "custom" and other spells will use normal logic from source!!!
+	local switch = {
+		[100000] = function ()
+			result = updownsign * (ubase + (e.self:GetSTR()/2)); --Half strength added to damage!
+		end,
+		[100001] = function ()
+			result = (updownsign * (ubase + (caster_level * 2))) * math.random(1,caster_level); -- multiplies final damage randomly from 1 up to caster level!
+		end,
+	}
+	
+	eq.log_spells(
+			string.format("[Mob::CalcSpellEffectValue_formula] spell [%i] formula [%i] base [%i] max [%i] lvl [%i] Up/Down [%i]",
+					e.spell_id,
+					e.formula,
+					e.base_value,
+					e.max_value,
+					e.caster_level,
+					updownsign
+			)
+	);
+	
+	local f = switch[e.formula]
+	if (f) then
+		f()
+	else
+		result = ubase; --DEFAULT YOU MAY CHANGE THIS TO WHATEVER YOU WISH BUT WILL ONLY CHANGE CUSTOM FORMULAS above 100,000 THAT AREN'T IN THE TABLE ABOVE!
+	end
+	
+	local oresult = result;
+	
+	--now check result against the allowed maximum
+	if (max_value ~= 0) then
+		if (updownsign == 1) then
+			if (result > max_value) then
+				result = max_value;
+			end
+		else
+			if (result < max_value) then
+				result = max_value;
+			end
+		end
+	end
+	
+	--if base is less than zero, then the result need to be negative too
+	if (base_value < 0 and result > 0) then
+		result = result * -1;
+	end
+	
+	eq.log_spells(
+			string.format("[Mob::CalcSpellEffectValue_formula] Result: [%i] (orig [%i]) cap [%i]",
+					result,
+					oresult,
+					max_value
+			)
+	);
+	
+	e.ReturnValue = result;
+	return e;
+end
+